Scilab Function
Last update : 8/6/2005

fplot2d - 2D plot of a curve defined by a function

### Calling Sequence

  `fplot2d(xr,f,[style,strf,leg,rect,nax])`
  `fplot2d(xr,f,<opt_args>)`

### Parameters

- `xr`: vector.
- `f`: external of type `y=f(x)` i.e. a scilab function or a dynamically linked routine referred to as a string.
- `style,strf,leg,rect,nax`: see `plot2d`
- `<opt_args>`: see `plot2d`

### Description

`fplot2d` plots a curve defined by the external function `f`. The curve is approximated by a piecewise linear interpolation using the points `(xr(i),f(xr(i))`. The values of f(x) are obtained by `feval(xr,f)`.

Enter the command `fplot2d()` to see a demo.

### Examples

    deff("[y]=f(x)","y=sin(x)+cos(x)")
    x=[0:0.1:10]*%pi/10;
    fplot2d(x,f)
    clf();
    fplot2d(1:10,'parab')

### See Also

`plot2d`, `feval`, `paramfplot2d`,

### Author

J.Ph.C.